2QTO Metal Transport, Membrane Protein date Aug 02, 2007
title An Anisotropic Model For Potassium Channel Kcsa
authors X.Chen, B.K.Poon, A.Dousis, Q.Wang, J.Ma
compound source
Molecule: Voltage-Gated Potassium Channel
Chain: A, B, C, D
Synonym: Potassium Channel Kcsa
Engineered: Yes
Organism_scientific: Streptomyces Lividans
Organism_taxid: 1916
Gene: Kcsa, Skc1
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_strain: Xl1-Blue
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pqe60
symmetry Space Group: C 1 2 1
R_factor 0.272 R_Free 0.272
crystal
cell
length a length b length c angle alpha angle beta angle gamma
128.780 68.930 112.040 90.00 124.63 90.00
method X-Ray Diffractionresolution 3.20 Å
ligand K enzyme
Gene
Ontology
ChainFunctionProcessComponent
A, D, C, B


Primary referenceNormal-mode refinement of anisotropic thermal parameters for potassium channel KcsA at 3.2 A crystallographic resolution., Chen X, Poon BK, Dousis A, Wang Q, Ma J, Structure. 2007 Aug;15(8):955-62. PMID:17698000
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (127 Kb) [Save to disk]
  • Biological Unit Coordinates (2qto.pdb1.gz) 122 Kb
  • LPC: Ligand-Protein Contacts for 2QTO
  • CSU: Contacts of Structural Units for 2QTO
  • Likely Quarternary Molecular Structure file(s) for 2QTO
  • Retrieve 2QTO in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 2QTO from S2C, [Save to disk]
  • View 2QTO in 3D
  • Proteopedia, because life has more than 2D.
  • On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure.
  • On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.
  • Visual 3D analysis of 2QTO
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Dipole moment, from Dipole Server at Weizmann Institute
  • 3D motif for 2QTO, from MSDmotif at EBI
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [2qto_B] [2qto_A] [2qto] [2qto_D] [2qto_C]
  • SWISS-PROT database: [P0A334]
  • Belongs to the voltage-gated ion channel (vic) superfamily according to TCDB.
  • Domain organization of [KCSA_STRLI] by SWISSPFAM
  • Other resources with information on 2QTO
  • Community annotation for 2QTO at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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